Oil seal



Aug- 30, l949 R. s. GREGOIRE 2,480,464

OIL SEAL Filed Jan. 1l, 1946 PERE.

Patented Aug. 30, 1949 i OIL SEAL Resta S. Gregoire, Highland Park, Mich., assignor of twenty per cent to Harold L. Cox and twenty per cent to John Joseph Thornton, Jr., both of Detroit, Mich.

Application January 11, 104s, serial No. 040,400

3 Claims. l

The present invention relates to oil seals for shafts and specically to a self-contained fixed adjustment seal for the clearance space between a shaft and surrounding spaced sleeve or wall between which there is relative rotary movement.

Among the objects of the invention is a seal for such spaces capable of being installed as a unit.

Another object is a seal of the type indicated which is capable of sealing even where there is an eccentric condition.

Still other objects will readily occur to those skilled in the art upon reference to the following description and the accompanying drawings in which Figure 1 is a diametral section of a seal made according to the present invention and ,arranged for mounting in the surrounding wall.

Figure 2 is an elevational view o! the Belleville washer used therein.

Figure 3 is a view similar to Figure 1 but of a seal mounted on the shaft.

Figure 4 is an elevational view of the Belleville washer used in the seal of Figure 3.

In the drawings, the seal is indicated as comprising a Belleville washer I0, which is a frustoconical washer, preferably made of spring steel or other metal although other materials such as plastic material may be used.

This washer I0. in the form of seal of Figures 1 and 2, is slotted or cut radially as at from the central opening to near the outer edge,`there being a sufficient number of such slots to provide for suilicient flexibility to permit a small movement when pressure is applied axially of the in an annular retainer 20, channel shaped in cross section with an annular plate 2| having an opening enough smaller than that of the Belleville washer to permit contact of the plate 2| and the flange I2 of the washer. This provides a 2 recess between the plate, flange I 2 and lip |6 in which is placed va felt washer or ring 22.

On the opposite side of plate 2| from the-washer I0 is a thin spring washer 23 adapted to contact plate 2| adjacent the central opening and contact the` retainer 20 with its outer edge.

In assemblingthe several parts, the retainer 20 will have one of its side walls turned in after placement oi.' the two washers and plate, and its axial dimension so determined as to compress somewhat the contained elements, axially.

The assembled seal is designed to be mounted in a surrounding sleeve or wall (not shown) with the shaft 25 extending axially therethrough.

In the form oi' seal shown in Figs. 3 and 4, the Belleville washer |0A is shown as without the flange I2 and slotted or cut radially as at IIA from the outside edge to near the central opening. Further, washer ISA of neoprene or other material is fixed to the outer surface of the Belleville washer IIIA with the lip ICA extending beyond the outer edge.

The annularv plate 2 IA contacts the outer edge of the Belleville washer and the spring washer 23A contacts the outer edge of plate 2|A and the wall of the channeled retainer ring 20A which in this form is inthe central openings of the severa/l parts.

This form of seal is designed to be pressed over a shaft 25A and lip IBA to contact a surround'- ing sleeve or wall-30. In this form, as in the other, in the assembling of the several parts, the three inner members are compressed axially.

Now having described the invention and the preferred embodiment thereof. it is to be understood that said invention is to be limited, not to the speciilc details herein set forth, but only by the scope of the claims which follow:

I claim:

1. An oil seal consisting of a frusta-conical spring washer having fixed to one face a frustov conical element of relatively soft resilient material having at one edge a lip portion extending beyond the adjacent edge of the washer, an annular plate contacting said adjacent edge of said washer, a spring washer contacting said plate and a channeled retaining ring embracing the juxtaposed edges of the washers and plateand adapted to maintain these in an axially compressed condition.

2. An oil seal consisting of a ,frusto-conlcal spring washer having xed to its inner 'face a frusto-conical element of relatively soft resilient material with its inner edge forming a lip portion extending beyond the adjacent edge of said washer. an annular plato contacting the inner edge oi said washer, a spring washer contacting said plate adiacent its inner edge and a channeled retaining ring embracing the outer edges of said washers and plate and maintaining these in axially compressed condition.

3. An oil seal consisting oi a frusto-conical spring washer having an axially extending flange at its inner edge and having iixed to its inner face a frusto-conical element of relatively soft resilient material with its inner edge forming a lip portion extending beyond the adjacent edge of said washer, an annular plate contacting the said flange and extending therebeyond whereby to form a recess between said plate, iiange and lip portion, a spring washer contacting said plate REFERENCES CITED The following references are of recor'd in the ile of this patent:

UNITED STATES PA'I'ENTS Number Name Date 1,652,747 Van Rijswijk Dec. 13, 1927 15 1,850,566 Roed Mar. 22, 1932 2,264,413 Siegerist Dec. 2, 1941 

